Masturbating to Taboo Fantasies

There is a chat site that has a room called "Black cocks, white women". You are able to post pics there. It's almost always full but if you do manage to get in, you find there are a lot of women there - far more than in any other site. I can only assume that many white women masturbate imagining having a black cock in them - especially a big one.

When I search "Wife share" on a porn site, many vids and pics, if not most, feature white wives being taken by a black man (sometimes more than one) with the husband watching. At least some of them must be "real". That is, not models. I assume a lot of guys (black and white) jerk off to these images and stories (maybe even imagining their wives or girlfreinds). Despite the general acceptance nowadays of interracial sex, it's not that long ago that it was a taboo.

Black male/white female sex seems to be favourite masturbation material for both men and women (white and black). I know I often play with my dick while I watch it. I wonder how many others do as well?

And then there are Brother/sister stories. There's quite a lot of them on this site. Another taboo subject that seems to be popular. Unfortunately, very few of the pics or vids featuring this are real but I have found a couple over the years and they have provided great material to masturbate to.

I read many years ago that some Japanese mothers masturbate their sons before going to school so they are not distracted from their studies by the girls. I doubt it's true, but it is another great taboo fantasy.

So, just how popular are taboo fantasies and are they popular simply because they're taboo?